I absolutely second Csmgolf's recommendation of Tekton as your primary "Heavy Metal" choice! Possibly the best bang for the buck Uber rock speaker offered in many years. Yet, they can do double duty as a very respectable audiophile speaker as well. Nothing really like them in terms of refinement for their price point. Not even close IMHO. The fact that their top model that can be had for a little over $2K new can play darn near as loud as the $100K plus monster Wilson Alexandria is really the proof of design in my opinion. Possibly the most overlooked "uber dynamic" audiophile speaker today. (Although you won't have any problems finding gushing professional reviews on them mind you ;-)
What is the best HEAVY METAL speaker?
I know totally blasphemy question here on Audiogon. But you like what you like, right? Anyway, I know most metal music is totally compressed and recorded horrible (aka Metallica) however there is a new age of metal bands out there that are starting to change that (Opeth started with Blackwater Park). So what speakers out there can take the pounding of a double bass drum kit hitting at full throttle and give the roar of metal guitar justice. There has to be a set up that would make Glen Tipton turn his head and say hell ya!